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Evaporative cooling of hydrogen molecular ions in a Penning trap
Stockholm University, Faculty of Science, Department of Physics. Fudan University, China; Ministry of Education, China.
Stockholm University, Faculty of Science, Department of Physics.
2014 (English)In: Hyperfine interactions, 2014, Vol. 227, no 1-3, 191-196 p.Conference paper, Published paper (Refereed)
Abstract [en]

Evaporative cooling of singly charged ions in a Penning trap is studied. The ions are created by in-situ electron bombardment of hydrogen molecules and trapped in a cylindrical Penning trap. Cooling of the ions is observed by their axial motion after trapping of a few hundred milliseconds. The ions temperature decreases by a factor of more than 6 in 800 ms, while the bunch density of the coldest ions increases by up to a factor of 10. By studying the time constants of the dependence of ion loss and axial temperature on the magnetic field strength, we exclude the effects of ions loss through the cyclotron motion on the axial ion temperature.

Place, publisher, year, edition, pages
2014. Vol. 227, no 1-3, 191-196 p.
Keyword [en]
Penning trap, Ion cooling
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-117071DOI: 10.1007/s10751-014-1026-7ISI: 000336272900020OAI: oai:DiVA.org:su-117071DiVA: diva2:810057
Conference
9th International Workshop on Application of Lasers and Storage Devices in Atomic Nuclei Research - Recent Achievements and Future Prospects (LASER), MAY 13-16, 2013, Poznan, POLAND
Note

AuthorCount:2;

Available from: 2015-05-06 Created: 2015-05-06 Last updated: 2015-05-07Bibliographically approved

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